At a pressure of 1 atmosphere a column of mercury in a barometer is supported to the height h = 0.76 m. The density of mercury is 13.6 × 10^3 kg/m3 . A barometer of similar design filled with water would support a column of water how high at a pressure of 1 atmosphere?
a. more than ten times h
c. less than one tenth h
b. about 1.36h
d. the same height h
A
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A) 2.0°C B) 6.8°C C) 25°C D) 50°C
The electrical conductivity of copper and nickel material at room temperature are 6.0×107 (??m)-1 and 2.0×107 (??m)-1 , respectively. Copper and nickel form a solid solution at low concentrations at room temperature. If an alloy of nickel plus 5 atom % copper produced from these materials has an electrical resistivity of 11×10-8 ??m, what would be the electrical resistivity of an alloy of nickel plus 10-atomicpercent copper? You may assume that these are dilute solutions.
What will be an ideal response?
? If the total translational kinetic energy of the molecules of oxygen in a container is 15 J at room temperature, what is the total rotational kinetic energy of these molecules?
A. ?5 J B. ?10 J C. 20J D. ?25 J E. 0J